Improvement in gas-burners



A PULTON Gas Burner.

Patented NOV. 22, 1.870.

NPEYERS. PHOTO-LITHOGRAPHE naar sans -annanwnutren7 or ALBANY, New vonk.

Letters Patent No. 109,404, dated November 22, 1870.

IMPROVEMENT IN GAS'BURNERS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom yit may concern.:

Be it known that I, Arnnnw Fouron', of the city and county of Albany, State of New York, have inf.

vented certain new anduse'ul Improvements in Gas- Burncrs; and I do hereby decla-re that the following is a description thereof', reference being hadto the accompanying drawing forming apart of' this speeitication, in which- Figure 1 represents a'side elevation at a gas-burner embodying the improvements, and illustrates thc several parts at rest orin operation under aslight pressnre.

Figure 2 represents a side elevation ot' the same,

`and illustrates the action of the improvements unden pressure. l Y

Figure 3 is a side elevation ofthe improvements in an enlarged scale. 4

Figure 4 is a side elevation of thc improvements on an enlarged scale, with a valve oi' a modified form.

Figure 5 is a vertical sectional view of a valve ot' modifiedform,'with stem attached. I ,Figurcs'6,7, and S are vertical views oi.' valves and their ports.

.It is well known that, in the common gas-burner, the gas has ai'ree permission for an unobstructed ow through the same, and is liable, under excessive press' ure, to blow, thereby discharging an unnecessary amount of gas, a great portion ot' which is not cousurncd, but escapes `in the room and causing an unpleasant smell.

Many devices have been employed to impede, limit, and check the ilow of the gas through the burner, which have been attended with more o1' less success, such as stuttin gs otcotton, hair, wire, and other brous materials, all of which are liable to objection onaccount oi' becoming, in time, more or less impregnated with the sediment or refuse settling from t-he gas,

which renders the s aid stuiiings inoperative 'to cii'ect the desired results. y y.

Other devices, such as valves, disks, and the like, operated by elastic diaphragms, have been used; also valves, operating by the pressure of the gas directly on the same, have been employed with more or less favorable results.

My invention relates to certain. improvements' in gas-burners,*whercbya valve, located in thc under side of the base, is operated to regulate the ilow of gas to the vbody-ofthe burner; and consists in a flanged piston working in a vertical cylinder, placed above the base and within the main chamber of the burner, against which piston the pressure of thc gas is exerted to throw the valve against its seat, the said valve being connected to the -said piston by means of a screwcut stem, on which the pistou is regulated for a vertical play in its chamber to effect the-valve below.

To enable others skilled in the artto make and use my invention I will proceed to dcscrib'e it in reference to the drawing and thcletters of reference marked thereon, the same letters indicating like parts.

In the drawing- A represents the valve-chamber:

B is the body of the burner;

U is the tip;

l) vis the lmsepvhich connects the shank surrounding the valve-chamber with the body of the burner E is the valve All of which are form or other.

The base D is provided with a central orifice, b, which com mnnicates from the valve-chamber A to the cylinder F above.

Attached to the valve E is the stem c, of a diameter considerable smaller than the orice b, which stem is provided with -a screw-thread, Z, on its upper end. The said stem works-vertically in the orifice b without touching the sides of the same, and its smaller size aiords sutiicieut space for the iiow of gas from the valve-chamber A to the cylinder F above.

Made ou the base D and over the orifice b is the vertical cylinder F, into which is made a port, s, through which the gas may ow from the said cylinder into the body B of the burner, as indicated by arrows in figs. 3 and 4.

I place in the top portion of the cylinder F the pisold, and have been used in some ton G, which piston is provided with a angc, g, figs. Y

3 and 4. The said ida-nge g rests upon the top edge of the cylinder. F, andprevents the piston from dropping downto the bottom of the cylinder.

The top of the piston G is perforated at .its center, and eut witha screw-thread to correspond with the screw-thread Z of the stem e, which stem the said top of the piston receives. Y

'lhe screw-thread Z of the stem c renders the piston, in which it works, capable of being nicely regu-V lated in its limit for a vert-ical movement within the cylinder F.

If the average pressure ofthe gas is butslight, the piston G should be raised ou the stem e, by means of the screw Z, to such a distance as will permit the valve E, attached to the said stein, to fall from its seat about one-sixteenth of an inch sca-ut; but if the pressure be great, the said piston G will needsbe screwed down on the said stem so that the valve E will not have more than one thirty-second or" an inch, or less, play to and from its seat.

As the pressure of the gas in the valve-chamber is equal in crei-5- direction, and the same on the top side ofthe valve as well as on the bottom of thc same, the pressure of the gas would in no ca-sc, by its action' on the said valve, throw it up to its scat. But, by the pressure of the gas being exerted ou the lower side of the pistou G in the cylinder F, where the pressure will be greater than in the body B ofthe burner, the said piston G will be raised to its full limit, and will carry with it the stem e and the valve E attached thereto, and thereby check or limit the flow of the gas from the valve-chamber to the body of the burner 5 and in that case the flow of the gas will not be over the upper side of the valve E, as in lig. 3, but through the port rv, as in iig. 4.

lVith these improvements any form ofvulvc E may be used, as shown in the several figures. It is to be understood that I- do not claim the use of valves;operating to check or limit the flow of gas from one part of a, burner to another, as being new, as such valves have long been known, and have been used in many modified forms to effect such results; but

Witnesses:

ALEX. SELKIRK, CHARLES SELKIRK. 

